Bolt pointing and threading machine



June 25, 1929.

J. A. KINNEY BOLT POINTING AND THREADING MACHINE 5 Sheets-Sheet FiledJune 13, 1923 June 25, '1929. J. A. KINNEY BOLT PD-I NTING AND THHEADINGMACHINE 5 Sheets-Sheet Filed June 13, 1923 atbonwq June 25, 1929'. J. A.KINNEY BOLT POINTING AND THREADiNG MACHINE Filed June 13, 1923 5Sheets-Sheet June 25, 1929. J. A. KINNEY sour Powrm e AND THREADING cum:

5 Sheetis-Shet 4 June 25, 1929. J; A. K INN EY BOLT POINTING ANDTHREADING MACHINE 5 Sheets-Sheet 5 Filed June 13, 1923 Patented dune 25,

STATES PATENT FMQFE.

JAMES A. KIINEY, OF LEEANGN, EENNSYLVANIA, ASSIG-NQE 'IO BETHLEHEM STEELCOMPANY, 01 BETHLEHEM, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BOLT POIN'IING AND THREADING MACHINE.

Application filed June 13, 1923. Serial No. 645 186.

The present invention relates to bolt pointing and threading machines,and particularly to machines designed and constructed for pointing andthreading relatively long bolt blanks.

(hie object of the invention is to provide a machine of this characterhaving a plurality of boltpointing and threading units posi tioned sideby side and driven from a common power source, the various units beingconnected to the power source in such manner that they operate in timedrelationship, permitting one operator to handle a considerable number ofunits. Immediately after placing the bolt blank upon one unit a finishedbolt is delivered by another unit and the units be tween these extremeshave progressed to different stages in their pointing and threadingoperations, the movements of the va ious units being so timed that asingle operator is enabled to keep them all actively at work by removingthe completed bolts and supplying fresh blanks.

The invention embodies a considerable oer of novel features which willbe de sci ihed in the specification and particularly pointed out in theclaims. Each unit includes a novel bolt pointing mechanism provided withmeans for regulating the exact amount to be removed from the end of abolt in the poir g operation, and each unit includes nor-cl .i'ans foreffecti relative movement of the bolt blank holding member and thetin-ceding die. which means effects relative u moment of these membersto bring the end of the bolt blank into engagement with the die butwhich thereafter becomes inactive to otter: further movement of thesemembers to ward each other, permitting the blank to more into thethreading die solely by the ac lion of the die upon the blank in,forming thread lilndue axial pressure on the blank, resulti) in sideu'essure on the threads bein formed. is thus avoided. The operation thethreading and pointing mechanism of each unit brought about by a novelarrangement mechanical elements. 1

Que cmbodiment of the invention is disclosed in order that the inventionmay be fully understood but it will be obvious that the design andarrangement of the component elements may be considerably modifiedwithout departing from the spirit of the invention and that thisembodiment is advanced by way of example only.

In the drawings:

Figure 1 is a plan view of the machine, certain of the intermediateunits being omitted; Figure 2 is an end elevation of the same as seenfrom the right, (Figure 1) Figure 3 is a side elevation as seen from thetop (Figure 1) Figure 1 is a vertical section through the machine taken,along the axis of one of the pointing and threading units;

Figure 5 is a view similar to Figure 1, a portion of the mechanism beingomitted however, and certain operative parts being shown in dif' entpositons; and

Figure (3 is a view similar to Figure 5 showing the parts in still otherpositions.

The machine is supported upon a bed or table provided with legs 11 andthe frame includes box-like member 12 bolted to the bed, and theforwardly extending bracket portion 13. A power shaft 14, arranged parallel to the box-like supporting member 12, and supported in bearings 15secured to this member has a plurality of bevel gears 16 fixed thereon,which mesh respectively with bevel gears 17 on short shafts 18 disposedat right angles to the shaft 1 1. Rotary motion of each shaft 18 iscommunicated to two spindles 19, one of which lies on each side of thisshaft, through gears 20 and 21. The spindles 19 rotate the threadingdies and the pointing tools nd it will thus be seen that these membersrotate constantly so long as the power shaft 1a is driven by anysuitable means, as for instance by means of a belt arranged on pulley22. Each spindle 19 is rotat bly supported in spaced bearings bolted orsecured to the top of the box-like supporting member 12. ThisSIQJDM'tlIlg member 12 has the central portion of its top removed toreceive gears 21 and other moving parts of the mechanism and it also hasbottom apertured to accommodate certain other moving parts. The severalbolt pointing and threading units are similar in design andconstruction, although timed to operate in sequence, and it will benecessary to describe in detail one such unit only, to render theoperation of all apparent.

Each spindle 19 isprovided with a friction clutch 25 between its drivinggear 21 and the threading die 26 secured to its forward end so that asingle unit may be disconnected at will without interfering with thecontinued operation of the other spindles. This threading die ispreferably of the type disclosed in my copending application Serial No.609,041, filed December 26, 1922, and is provided with threading jawswhich are moved to closed or threading position by the movement of theconical operating member 27 into the die, and are allowed to open by amovement of this member in the reverse direction.

The bolt pointing tool is indicated at 28 and comprises a long rodprovided with cutting edges on its forward end, which rod ex tendsthrough an axial aperture in the spindle 19 and is considerably longerthan the spindle. The rod 28 is movable axially of the spindle and isrotatable therewith, being splined to the spindle for this purpose, orpreferably having a squared portion intermediate its ends slidinglyengaging a correspondingly squared aperture in the spindle.

To the forward end of the bracket 13 is secured a slide rest 30 whichsupports the bolt blank holding slide 31 for movement parallel to theaxis of the spindle. The slide 31 has secured thereon the bolt headholding member 32 and the bolt shank supporting member The member 32 isprovided with a recess 34 into which the head of a bolt blank may beinserted, the fiat sides of the head 1ying close to the lateral walls ofthe notch so that the bolt blank cannot rotate when undergoing thethreading operation. The slide 31 is provided with a downwardlyextending flange or lug 31 which is secured to a hollow rod member 35extending horizontally and parallel to the axis of the spindle. The rearend of rod member 35 is pivotally secured to the upper end of a bellcrank lever 36, the end of this lever being bifurcated and which leveris pivotally supported upon an axle 37 mounted in the frame. The lowerarm of bell crank lever 36 is received within a recess 38 in a lever 39also pivoted on axle 37 and provided with weights 40 adjustably mountedon its opposite end. The weighted lever 39 normally tends to rotate bellcrank lever 36 in a clockwise direction and constitutes a means to biasor draw the slide 31 toward the threading die. An adjustable stop 41limits the downward movement of the lever 39 (but not the movement ofbell crank lever 36).

The die opening and closing cone 2? is provided with a rearwardextension having an annular slot 43 and into this slot extend coaxialpins 44 secured to the spaced upper end portions of a lever 45 (which isbifurcated) pivoted at 46 to a bracket secured to the frame. A collar 47adjustably secured on rod 35 is adapted to strike the curved projection48 on lever 45 when the slide 31 is thrust forwardly or away from thethreading die, to cause the jaws of the die to close for a succeedingthreading operation. Pivoted to lever 45 at approximately its mid-pointis a link 49 having threaded on its rear end abutment nuts 50. This linkslidably extends through an apertured block 51 pivotally secured to theupper end of a lever 52, also ournaled or pivotally supported on theaxle 37. Extend-- ing through the axial aperture in the rod 35 andhaving threaded engagement with said rod at some point along its length,preferably at its rear end, is an adjusting rod X,the rear end of whichis adapted to engage the lever 52 at a certain time in the operation ofthe machine. This rod may be adjusted to determine the length of theportion of the bolt blank to be removed by the pointing tool, in amanner hereinafter to be pointed out.

The levers 36 and 52 are provided with rollers 53, 54 respectively whichare positioned to engage cams mounted upon shaft 55 for rotationtherewith. A short cam 56 (measured circumferentially) is adapted toengage roller 53 and roller 54 extends within a cam groove 57 in camplate or disk 58. Rotation of the shaft 55 therefore effects movement oflovers 36 and but it will be observed that while the lever 52 ispositively operated in both directions as shaft 55 moves in a clockwisedirection (Figure 4), lever 36 is positively operated in only onedirection, that is, toward the front of the machine. The return movementof this lever brought about in part by the weight-ed lever 39 and inpart by the action of the threading die 26 on the bolt blank, drawingthe bolt blank toward the ight (Figure 4) or toward the rear of themachine and causing movement of the slide 31, rod 35 and lever 36 in thesame direction.

Fixed upon the rear end of the pointing tool 28 so as to be movabletherewith in an axial direction but non-rotatable, that is, permittingfree rotation of the pointing tool within the same, is a collar 60provided with horizontal oppositely extending pins 61 which arereceivedwithin notches in the spaced upper end portions of the two part lever L,which is pivoted at 63 to a bracket secured to the frame of the machine.As can be seen clearly from Figure 2, the upper portion or link 64 oflever L is bifurcated and is provided with a transverse web 65 while thelower portion 66, which is pivotally secured to the upper portion by abolt 67, is provided with an extension 68 (Figure 5) which is normallypressed against the underside of the web 65 by means of acoiled spring69 confined between an abutmeiiit 70 resting against web 65 and anabutn'ient plate 71 adjustably mounted on the outerend of the shortcolumn 72 pivoted at 73 to the extension 68. The spring 69 tends toyieldingly maintain the upper and lower portions of lever L in alignmentas shown in Figure 4, but permits movement of the upper portion of thelever relatively to the lower portion about the pivot bolt 67 in aclockwise direction (Figure l) A link pivotally connects the. bolt tothe lever 52 so that these members move in unison in the operation ofthe machine. As is obvious, the lower member 66 of lever L may beconsidered to be a lever actuated by link 75, the upper member 64 beinga link connection between lever 66 and the pointer member.

The cam shaft 55 is driven from power shaft let through gear train Gr,clearly shown in Figures 2 and 3 and which includes bevel-ed gears 77,worm 7S and worm gear mounted on the end of this shaft.

In the operation of one of the units a blank is first positioned on theslide 31, assuming the slide to be in its outer or forward posi tion asshown in Figure 4:. The pointing tool and threading die are in rapidrotation and the cam shaft 55 is moving in a clockwise direction,although at much slower speed. The end of the pointing tool isprojecting beyond the face of the cutting die. As soon as the cam 56disengages roller he weight-ed lever 39 acts to draw the slide 31 to theright and this movement is uninterrupted until the end of the bolt blankstrikes the end of the pointing tool. The action of weights 4O overcomesthe action of spring 69 and the upper end of lever L or link 64L ispushed rearwardly by the pressure of the bolt blank on the pointingtool, as shown in Figure 5, link 75 preventing rearward movement of thelower portion of lever L and roller 54: preventing substantial rearwardmovement of lever 52. In Figure 4 the slide'31 is just about to startrearwardly and rearward motion continues until the rear end of theadjusting rod X strikes the lever 52. Rearward movement of the blank isthus temporarily halted before its end has entered the die and spring69, which has been compressed (Figure 5) and which constantly tends toexpand, feeds the pointing tool forward to effect the trimming of thebolt point. Continued rotation of the cam 58 results, after it hasturned through substantially 180, in rearward motion of the lever 52 andlover L so that the pointing tool is rapidly drawn within the threadingdie. During this rearward movement the levers 36 and 52 move together,the weighted lever 39 pressing the end of the rod X against the lever Although levers 36, 52, and L move synchronously, the movement of thepointer is more apid than that of the blank holder because of lever Lbeing longer than the lever arm of lever 36.

The threading die is closed and the bolt blank enters the same.Immediately thereafter the weighted lever 39 engages the stop 41 andfurther movement of the bolt blank into the threading die is caused bythe action of the die on the blank and without other forces beingexerted to effect this movement.

Threading of the bolt blank continues until the block 51 strikes theabutment nut 50 on the end of the link 49 resulting in the movement ofthe lever 45 to the right and the withdrawal of the die closing cone 27from the die, thereby allowing the jaws to open. After the die jaws areopened the slide 31 becomes stationary and will remain stationary untilthe cam 56 again engages the roller 53, when the slide is returned toits forward or outermost position.

In Figure 6 the parts are illustrated in the positons which they occupyimmediately after the threading and pointing of the bolt and just as theslide is beginning to move to its outermost position. By adjusting therod X so that the movement of the slide in a rearward direction ishalted at the desired position by contact of the inner end of the rod XWith the lever 52, the extent of the rearward movement of the upperportion of the lever L and the length to be cut from the end of the boltcutter is regulated. The belt pointing is entirely accomplished beforethe blank enters the threading die, the spring 69 holding the pointingtool against the blank while the slide 31 is stationary-the springexpanding as the end of the blank is cut away. The pointing is completedwhen the two portions of lever L are again in alignment, and theoperation of the mechanism is so timed that immediately after pointinglevers 36 and 52 moverearwardly and threading is begun. The pointingtool moves rearwardly at a much fast-er rate than the slide and does notobstruct the passage of the bolt blank into the die.

The various units of the machine operate in timed relation to each otherso that bolts are completed successively thereby enabling a singleoperator to pass from unit to unit and to remove from each in successiona finished bolt as it is completed, and to insert a blank. The machineis particularly adapted for use with bolts of considerable length, butto one skilled inthe art it will be obvious that it may be adapted forbolts of shorter length and also that the design and arrangement ofthecomponent elements of the invention may be considerably changed withoutdeparting from its scope.

Having thus described the invention what is claimed. as new and desiredto be secured by Letters Patent is:

1.In a threading and pointing machine, the combination of a threadingdie; a pointer member; a blank holder; means for travers ing the blankholder including a rod, a lever pivotally connected to the rod, a cameffective during a fraction of its rotation to swing the lever in onedirection, and biasing means to swing the lever in the other direction;means for traversing the pointer member including a cam, a first leverhaving a follower engaging the cam, a second lever, a link connectingthe levers, and yield-able connecting means between the second lever andthe pointer member to permit over-travel of the latter in one directionwith respect to the second lever; and means for opening and closing thedie in cluding an operating member, a lever connected to the operatingmember, an abutment carried by the rod of the blank holder traversingmeans for moving the lever in one direction to move the operating memberto close the die, and means operated by the pointer member traversingmechanisi'n at a predetermined position of the latter to move the leverin the other direction to open the die.

2. In a threading and pointing machine, the combination of a blankholder; a pointer member; a threading die; means for traversing theblank holder including a cam eliective during a portion of its rotationto move the blank holder in an outward direction and means for biasingthe blank holder for movement in an inward direction; means fortraversing the pointer member including a cam,

mechanism operated by the cam, connecting means between the mechanismand the pointer member including a yieldable member which is overcome bythe blank holder biasing means when a blank contacts with the pointermember, whereby the blank holder, the blank, and the pointer member movetogether relatively to said mechanism, and means carried by the blankholder traversing means and by said mechanism for rendering the biasingmeans ineffective to secure relative movement of the pointer member withrespect to said mecha nism, whereupon the yieldable member becomesefiective as the sole means to advance the pointer member as the blankis being pointed; means for opening and closing the die including anoperating member, means operated by the traversing mechanism oi theblank holder during the extreme portion of the outward movement of theblank holder "for rendering said operating member effec tive to closethe die, and means rendered etfective when said mechanism of the pointermember traversing means occupies a predetermined position to render saidoperating member ei'l ective to open the die. V

3. In a threading and pointing machine, the combination of a blankholder; a pointer member: a threading die; means for traversing theblank holder including a cam etl ective during a portion oi its rotationto move the blank holder in an outward direction and means for biasingthe blank holder for movement in an in 'ard direction; meansfortraversing the pointer member including a cam, mechanism operated by thecam, connecting means between the mechanism and the pointer memberincluding a yieldable member which is overcome by the blank holderbiasing means when a blank contacts with the pointer member, whereby theblank holder, the blank, and the pointer member move together relativelyto said mechanism, and adjustable means carried by the blank holdertraversing means and by said mechanism for rendering the biasing meansineffective to secure relative movement oi the pointer member withrespect to said mechanism, whereupon the yieldable member becomeseffective as the sole means to advance the pointer member as the blankis being "Jointed; means for opening and closing the die including anoperating member, means operated by the traversing mechanism ot theblank holder during the extreme portion of the outward movement oi theblank holder for rendering said operating member ell'ective to close thedie, and means rendered eilcetive when said mechanism of the pointermember traversing means occupies a predetermined position to render saidoperating member effective to open the die.

l. in a threading and pointing machine, the combination of a blankholder for blanks to be threaded; a pointer member; a threading die;means for traversing the blank holder includinga cam eil'ective duringaportion oi? its rotation to move the blank holder outwardly, biasingmeans for moving the blank holder inwardly, means for rendering thebiasing means ineffective to secure inward movement of the blank holderafter a blank is engaged by the threading die; means for traversing the.pointer member including a cam, mechanism operated by the cam,connecting means between the mechanisn'i and the pointer memberincluding a yieldable member which is overcome by the blank holderbiasing means when a blank contacts with the pointer member, whereby theblank holder, blank, and pointer member move together relatively to saidmechanism, and means carried by the blank holder traversing means and bysaid mechanism for rendering the biasing means ineiiective to securemovement of the pointer member relatively to said mechanism, whereuponsaid yieldable member is effective as the sole means to advance thepointer member as the blank is being pointed and said biasing means iseffective to cause the blank holder and the blank to follow the motionof said mechanism; means for opening and clos-' ing the die including anoperating member, means rendered effective during the outward portion ofthe outward movement of the blank holder traversing means to render theoperating member effective to close the die, and means renderedeffective when said mechanism oi the pointer member traversing meansreaches a predetermined position to render the operating membereffective to open the die.

5. In a threading and pointing machine, the combination of a blankholder for blanks to be threaded a pointer member a threading die meansfor traversing the blank holder ineluding a peripheral cam having a camportion of limited arcuate extent, a lever having a portion arranged inthe path of movement of said cam, a rod connected to the blank holderand pivotally connected to the lever, weight means cooperating with saidlever to cause the latter to move inwardly toward the cam, means forlimiting the range of effectiveness of said weight means; means fortraversing the pointer member including a face cam coaxial with thefirst cam and having a cam groove in one face thereof, a first leverhaving its pivot coaxial with the pivot of the blank holder traversinglever and having a follower engaging the cam groove, a second lever, alink connecting the levers, an upper lever member pivotally connected tothe sec ond lever and connected to the pointer member, a tension devicenormally tending to maintain said second lever and the upper levermember in alignment and which exerts a force on the upper lever memberless than that exerted thereon by the pointermember due to the effect ofthe weight means acting on the pointer member when a blank is brought incontact with the latter, whereupon the blank holder, the blank and thepointer member-move together, the tension means be ing overcome and thepointer member moving in advance of the second lever, and an adjustablemember carried by the blank holder traversing means and arranged tocontact with the first lever to limit motion of the pointer member inadvance of the second lever, whereupon the tension means becomes thesole means to cause the pointer member to be advanced as the blank isbeing pointed and the weight means being effective to cause the blankholder traversing means to follow the motion of the first lever untilthe Weight means becomes ineffective; means for open ing and closing thedie including an operating member, a leverconnected to the operatingmember, an abutment carried by the rod of the blank holder and arrangedto contact with the lever during the extreme outward portion of theoutward motion of the blank holder to render the operating membereffective to close the die, a link connected to the lever, and meanscarried by the first lever of the pointer member traversing means and cooperating with said link to render the operat ing member effective toopen the die when said first lever occupies-a predetermined position.

6. In a bolt threading machine, in combination, a rotatable die, amovable bolt holding member, a lever for operating said bolt holdingmember, a cam for moving said lever in one direction, a gravity operatedlever for moving said first lever in the opposite direction, and anadjustable stop for limiting the downward movement of said gravityoperated lever.

7. In a threading and pointing machine, the combination of a pointermember and mechanism for traversing the pointer member including a cam,a lever operated by the cam,

a link pivoted to the lever and connected to the pointer member, andresilient means adapted to yieldingly resist rearward movement of thelink with respect to the lever, whereby the pointer member may be movedin one direction in advance of the lever against the action of theresilient means.

8. In a threading and pointing machine, the combination of a pointermember; mechanism for traversing the pointer member including a cam, alever operated by the cam, a link pivoted to the lever and connected tothe pointer member, and resilient means adapted to yieldingly resistrearward movement of the link with respect to the lever, whereby thepointer member may be moved in one direction in advance of the lever;and adjustable means for limiting the movement of the pointer member inadvance of said lever against the action of the resilient means.

9. In a threading and pointing machine, the combination of a blankholder; a pointer member; means for traversing the blank holderincluding power-operated means for moving the blank holder outwardly andbiasing means for moving-it inwardly; means for traversing the pointermember including power-operated mechanism and a yieldable connectionbetween said mechanism and the pointer member, the biasing means ofsaid.

blank holder being effective to overcome the yieldable connection when ablank contacts with the pointer member to cause movement of the latterin advance of the power-operated mechanism; and adjustable means carriedby the blank holder and cooperating with the power-operated mechanism ofthe pointer member traversing means to limit the advance movement of thepointer member.

10. In a threading and pointing machine, the combination of a pointermember and mechanism for traversing the pointer member including a cam,a first lever having a follower cooperating with the cam, a secondlever, a link connecting the levers, an outer lever member pivotallyconnected to the second lever and. connected to the pointer member, andtension means cooperating with the second lever and with the outer levermember to maintain the second lever and the outer lever member inalignment but permitting of the second lever member being moved in onedirection by the pointer member in advance of the second lever.

11. In a threading and pointing machine, the combination of a threadingdie, a pointer member, means for opening and closing the threading die,a cam, a first lever having a follower engaging the cam, a second lever,a link connecting the levers, yieldable connecting means between thesecond lever and the pointer member, whereby the latter may be moved toa greater extent in one direction than would be permitted by theconnecting levers and the cam, and means operated by the first lever ata predetermined position. there of for moving the opening and closingmeans of the die in. an opening direction.

12. In a threading and pointing machine, the combination of a threadingdie, a pointer member, a blank holder, an operating shaft, peripheraland face cams on the operating shaft, the peripheral cam having a camportion of limited arcuate extent and the face cam having a lateral camgroove, a bell crank lever having upwardly extending and substantiallyhorizontally extending arms, the upwardly extending arm being acted uponby the peripheral cam, a rod connected to the blank holder and pivotallyconnected to the upwardly extending arm, a lever having its pivotcoaxial with the pivot of the bell crank lever, overlying the.substantially hori- Zontally extending arm of the bell crank lever, andhaving a weight secured thereto, adjustable means for limiting downwardmovement of the second lever and its weight, a third lever having itspivot coaxial with the pivot of the bell crank lever and having afollower fitting the cam groove of the face cam, a fourth lever, a linkconnecting the third and fourth levers, a yieldabl-e connection betweenthe fourth lever and the pointer member, adjustable abutment meanscarried by the rod, connected to the blank holder and adapted to contactwith the third lever, whereupon the bell crank lever and the third levermove together as determined by the cam groove until downward movement ofthe second lever and of its weight is limited, an operating member foropening and closing the threading die, and means carfied by the rod ofthe blank holder and by the third lever to render said operating membereffective, respectively, to close the die and to open the die. 7 13. Ina threading and pointing machine the combination of a threading die, apoint er, a blank holder, means for traversing the blank holderincluding a. lever, means for traversing the pointer including a lever,and means for moving the levers in synchronism after the pointingoperation, said levers being of different lengths whereby the pointermoves more rapidly than the blank holder. 14:. In a threadingandpointing machine, the combination of a threading tool, a pointing devicelongitrminally movable relative to the threading tool, means forrotating the mg device, means for interrupting the feeding movement ofthe blank holder, means for continuing the positive feeding of the blankholder following the pointing opera tion to bring the blank into fulloperative engagement with the threading tool, and means for interruptingthe positive feed of the blank holder to permit the further feed of theblank holder to be effected by the action of the threading tool on theblank.

15. In a threading and pointing machine, the combination of a threadingtool, a point in g device concentrically disposed and longitudinallymovable relative to the threading tool, means for rotating the threadingtool and pointing device, a blank holder, means for positively feedingthe blank holder toward the pointing device to operatively engage theblankand pointing device, means for interrupting the feeding movement ofthe blank holder, means for moving the pointing device rearwardly afterthe pointing operation, means for continuing the positive feeding of theblank holder following the pointing operation to bring the blank intofull operative engagement with the threading tool, and means forinterrupting the positive. feeding of the blank holder to permit thefurther feed of the blank holder to be effected by the action of thethreading tool on the blank.

16. In a threading and pointing machine, the combination of a threadingtool, a pointing device longitudinally movable relative to the tool,means for positively reciprocating the pointing device relative to thethreading tool, resilient means opcratively interposed between thereciprocating means and the pointer to yieldinglv resist rearwardinovement of the pointingdevice, a blank holder, means for feeding theblank holder to engage the blank with the pointing device and more thepoin'tin device rearwardly against the action of the resilient means,and means for interrupting the feed of the blank holder to permit theresilient means to move the pointing device forwardly for pointin theblank.

In testimony whereof I hereunto afiix my signature.

JAMES A. KINNEY.

